This is a fun image that has a lot of pentagons and isosceles triangles. This pattern has neighbouring pentagons having the ratio of the .618 (the golden ratio). I'll do some more exploring to see if I can find another interesting pattern.
I think this may overly complicate the pattern but here is another. Maybe this is more like an amoeba. It was a little tricky to make that inner spiral fit but it does.
